Raptor is so much better, I bought the DragonKhan but only because it was gold and not AC's.
If you mean Nulgath, then there probably won't be one. Nulgath doesn't even work on Aqw anymore, he does Oversoul.
Nulgath is thinking about putting a mount armor out. I'm not too sure if he is going to be doing it now since Quibble has received his last update for this time around. Oversoul isn't exactly his main focus. He works on it more than AQW, but he is still on the AQW team.
Information about the mount armor from Nulgath could be found on the Design Notes on the Aq.com website.